PP2.1j (ii): Organic, Inorganic Hybrid Solar Cells

Project Coordinator:

Monash University

Chief Investigators:

Yi-Bing Cheng

Associate Investigators:

CSIRO

Organic Hole Transport Materials (HTMs) are commonly used in hybrid organic I inorganic (perovskite) solar cells to promote higher conversion efficiencies. Spiro-OMeTAD is the current standard organic HTM employed in the fabrication of perovskite solar cells. However, the synthesis and purification procedures make this HTM expensive and unsuitable for very large scale production. Additionally, the additives such as tert-butylpyridine and Lithium bis(Trifluoromethanesulfonyl) Imide (LiTFSI) which are used to make it more efficient, also make it unstable due to ingress of moisture.

The aim of this project is to develop novel HTMs, both organic and metal complexes, that can rival Spiro-OMeTAD in te rms of efficiency but be of much easier synthesis and hence lower production costs and more easily up-scalable. The second aim is to try to overcome some of the SpiroOMeTAD limitations- namely low conductivity and the need for additives like tert-butylpyridine and LiTFSI. The study also extends towards the characterisation of the devices on commonly observed phenomenon J-V hysteresis.

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This Program has been supported by the Australian Government through the Australian Renewable Energy Agency (ARENA). The Australian Government through ARENA is supporting Australian research and development in solar photovoltaic and solar thermal technologies as part of its commitment to making renewable energy technologies more affordable and increasing the amount of renewable energy used in Australia. The views expressed herein are not necessarily the views of the Australian Government, and the Australian Government does not accept responsibility for any information or advice contained herein.